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XP-10 Owner’s Manual
10 watts during operation. Please verify that the indicated voltage
requirement of this preamplifier is consistent with the utility voltage
at your location.
We have provided a standard IEC AC power cord that fits into the
IEC 320 line receptacle at the rear of the preamplifier chassis. The
preamplifier is equipped for operation with an earth ground provided
by the users AC outlet. Do not defeat this ground. The chassis and
circuit ground of the preamplifier is connected to earth through a
power thermistor, which gives a ground connection for safety but
helps avoid ground loop related noise issues.
There are a total of five inputs. Two of the five inputs are balanced
XLR only. The other three inputs are single-ended only. There are
two pairs of outputs available with identical gain structure. One pair
Balanced, one pair single-ended.
Balanced inputs and outputs are via XLR connectors. Single-
ended inputs and outputs are via RCA connectors. On the XLR
connectors, pin 1 is grounded, pin 2 is the positive signal, and pin
3 is the negative signal. Left channel RCA connectors are marked
with “L”. Right channel RCA connectors are marked with “R”. In
a similar fashion balanced XLR inputs and outputs are marked with
“L” for left and “R” for right channel.
The main outputs are located at the left-hand side (viewed from the
rear) of the rear panel, two male XLR connectors, and two RCA
connectors, “R” (right) and “L” (left). The RCA connector’s ground
is in parallel with pin 1 of the XLR outputs and the RCA hot is fed
from an independent summing junction that maximizes the X circuit
benefits. The RCA, single-ended, outputs are buffered from the
balanced outputs. You may use both the single ended and balanced
outputs at the same time. On the XLR, pin 1 is ground, pin 2 is
positive, and pin 3 is negative.
In application the XP-10s front panel controls and alphanumeric
display are quite straight forward, and intuitive. We encourage you
to become familiar with their operation prior to establishing any
input connections with this unit. Experience indicates that engaging
in a few minutes of exploration will add much to your ultimate
enjoyment of this exceptional Pass Labs product.
The left most button on the front panel is Mute. Pressing this
button toggles between mute on and mute off. Mute on removes
signal from the output of the preamp.
Description of Operation